Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on FormS-8 of our report dated July 26, 2019 (January 24, 2020 as to the effects of the reverse stock split described in Note 16) relating to the financial statements of Beam Therapeutics Inc., appearing in Registration StatementNo. 333-233985 on FormS-1 of Beam Therapeutics Inc.
/s/ Deloitte & Touche LLP
Boston, Massachusetts
February 21, 2020
